A method of preparing copper-based delafossite-type oxide material
A technology of delafossite and oxide, applied in the field of delafossite structure synthesis, to achieve the effect of saving raw materials, easy doping, and easy implementation
Inactive Publication Date: 2021-03-09
BEIJING UNIV OF CHEM TECH
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[0005] Aiming at the problems encountered in the synthesis process of delafossite-type oxide materials, the present invention provides a method for preparing copper-based delafossite-type oxide materials through the process of "template-etching-calcination"
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Embodiment 1
[0106] (1) Weigh 170.5mg CuCl 2 2H 2 O was dissolved in deionized water, stirred evenly, stirred at room temperature for 10 minutes, 10 mL of 2.0M NaOH solution was added dropwise, and stirred for 30 minutes. After that, 10 mL of 0.6M aqueous ascorbic acid solution was added dropwise to the above solution, and stirring was continued for 3 hours. After the reaction, the precipitate was washed with deionized water and ethanol, and dried in an oven at 65°C to obtain orange Cu 2 O powder. The particle size distribution chart detected by the DLS particle size potentiometer is as follows figure 2 As shown, the resulting Cu 2 The particle size of the O powder is mostly between about 100 and 400 nm, and the number average particle size is 189.4±46.6 nm.
[0107] (2) Take by weighing the Cu synthesized in 10mg step (1) 2 O, 5.6mg Cr(NO 3 ) 3 ·6H 2 O and 3.333g PVP (M w =40000) was dissolved in a mixed solution of 10mL ethanol and deionized water (v:v=1:1), and dispersed even...
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Abstract
The invention relates to a method for preparing a copper-based delafossite type oxide material, the delafossite type oxide material prepared by the method and application of the delafossite type oxidematerial. The method comprises the following steps: providing Cu2O nano particles; mixing Cu2O nano particles, a precursor of a metal M and a dispersing agent, and then adding an aqueous solution containing S2O3<2-> for etching reaction to obtain Cu2O@M(OH)n particles; and calcining the Cu2O@M(OH)n particles to obtain the copper-based delafossite type oxide material. The method may also include the step of treating the obtained copper-based delafossite type oxide material with an acid. The preparation method provided by the invention is easy to implement, does not need a high-pressure condition, is short in reaction time and saves raw materials. In addition, doping of various metal ions can be achieved easily. The copper-based delafossite type oxide material can be used as a hole transport material for perovskite solar cells.
Description
technical field [0001] The invention belongs to the technical field of delafossite structure synthesis, and in particular relates to a method for preparing a copper-based p-type semiconductor delafossite-type oxide material, the delafossite-type oxide material prepared by the method and applications thereof. Background technique [0002] Energy is the most important driving force for the development of human society, but since the 20th century, energy crisis and environmental pollution have gradually become the main obstacles restricting the development of human society. As a clean and renewable energy source, solar energy has attracted increasing attention. A solar cell is a device that directly converts solar energy into electrical energy. Among them, the efficiency of perovskite solar cells has increased from 3.8% to 25.2%, this efficiency is comparable to that of traditional silicon cells, so it has attracted extensive attention from researchers. Perovskite solar cells ...
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Patent Timeline
Login to View More IPC IPC(8): C01G37/14C01G3/02B82Y10/00B82Y30/00B82Y40/00H01L51/42H01L51/46
CPCC01G37/14C01G3/02B82Y10/00B82Y40/00B82Y30/00C01P2002/72C01P2004/80H10K30/10H10K2102/00Y02E10/549
Inventor 孙美丽殷雄汪乐余
Owner BEIJING UNIV OF CHEM TECH